Genetics Review

Front

What is the genotype of a plant with round seeds and yellow seeds if it is homozygous for both traits?

Back

RRYY

Front

What is the phenotype of a plant with the genotype RrYy?

Back

Round and Yellow seeds

Front

What percentage of offspring will have round and yellow seeds when crossing RRYY with rryy?

Back

100%

Tags

NGSS.HS-LS3-1

Front

Define a dominant allele.

Back

An allele that covers up the instruction of another allele in a homologous pair, symbolized by a capital letter.

Front

What is a common concern associated with genetically modified organisms (GMOs)?

Back

Potential environmental impact

Tags

NGSS.HS-LS2-7

Front

What genetic disorder is characterized by an extra chromosome 21?

Back

Down syndrome

Front

What is the primary purpose of genetically modifying organisms (GMOs)?

Back

To improve crop yield and resistance to pests

Front

What does the term 'homozygous' mean in genetics?

Back

Having two identical alleles for a particular gene.

Front

What does the term 'heterozygous' mean in genetics?

Back

Having two different alleles for a particular gene.

Front

What is the expected phenotypic ratio of a dihybrid cross between two heterozygous parents (RrYy x RrYy)?

Back

9:3:3:1